[Public-List] Public-List Digest, Vol 4511, Issue 1

[John Johnston]

Sent from my iPad

> On Jun 19, 2024, at 6:10 PM, George Dinwiddie via Public-List <public-list at lists.alberg30.org> wrote:
> 
> On 6/19/24 5:07 PM, John Johnston via Public-List wrote:
>> Isn’t the two blade prop based on being driven by an Atomic 4, or similar engine that has no gear reduction and therefore spins much faster?
> 
> The two-blades is to reduce drag while sailing, especially if you line up the prop with the keel.
> 
> The 7" pitch is for the faster turning prop shaft. For a diesel, you probably want a 10" pitch or so.
> 
> - George
> 
> --
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>  When I remember bygone days                         George Dinwiddie
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>  So many I love were not yet born.                          also see:
>               'The Middle' by Ogden Nash     http://idiacomputing.com
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